118 lines
3.2 KiB
Java
118 lines
3.2 KiB
Java
/*
|
|
* Copyright (C) 2007 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package android.net;
|
|
|
|
import java.io.IOException;
|
|
import java.io.FileDescriptor;
|
|
|
|
/**
|
|
* non-standard class for creating inbound UNIX-domain socket
|
|
* on the Android platform, this is created in the Linux non-filesystem
|
|
* namespace.
|
|
*
|
|
* On simulator platforms, this may be created in a temporary directory on
|
|
* the filesystem
|
|
*/
|
|
public class LocalServerSocket {
|
|
private final LocalSocketImpl impl;
|
|
private final LocalSocketAddress localAddress;
|
|
|
|
/** 50 seems a bit much, but it's what was here */
|
|
private static final int LISTEN_BACKLOG = 50;
|
|
|
|
/**
|
|
* Crewates a new server socket listening at specified name.
|
|
* On the Android platform, the name is created in the Linux
|
|
* abstract namespace (instead of on the filesystem).
|
|
*
|
|
* @param name address for socket
|
|
* @throws IOException
|
|
*/
|
|
public LocalServerSocket(String name) throws IOException
|
|
{
|
|
impl = new LocalSocketImpl();
|
|
|
|
impl.create(true);
|
|
|
|
localAddress = new LocalSocketAddress(name);
|
|
impl.bind(localAddress);
|
|
|
|
impl.listen(LISTEN_BACKLOG);
|
|
}
|
|
|
|
/**
|
|
* Create a LocalServerSocket from a file descriptor that's already
|
|
* been created and bound. listen() will be called immediately on it.
|
|
* Used for cases where file descriptors are passed in via environment
|
|
* variables
|
|
*
|
|
* @param fd bound file descriptor
|
|
* @throws IOException
|
|
*/
|
|
public LocalServerSocket(FileDescriptor fd) throws IOException
|
|
{
|
|
impl = new LocalSocketImpl(fd);
|
|
impl.listen(LISTEN_BACKLOG);
|
|
localAddress = impl.getSockAddress();
|
|
}
|
|
|
|
/**
|
|
* Obtains the socket's local address
|
|
*
|
|
* @return local address
|
|
*/
|
|
public LocalSocketAddress getLocalSocketAddress()
|
|
{
|
|
return localAddress;
|
|
}
|
|
|
|
/**
|
|
* Accepts a new connection to the socket. Blocks until a new
|
|
* connection arrives.
|
|
*
|
|
* @return a socket representing the new connection.
|
|
* @throws IOException
|
|
*/
|
|
public LocalSocket accept() throws IOException
|
|
{
|
|
LocalSocketImpl acceptedImpl = new LocalSocketImpl();
|
|
|
|
impl.accept (acceptedImpl);
|
|
|
|
return new LocalSocket(acceptedImpl);
|
|
}
|
|
|
|
/**
|
|
* Returns file descriptor or null if not yet open/already closed
|
|
*
|
|
* @return fd or null
|
|
*/
|
|
public FileDescriptor getFileDescriptor() {
|
|
return impl.getFileDescriptor();
|
|
}
|
|
|
|
/**
|
|
* Closes server socket.
|
|
*
|
|
* @throws IOException
|
|
*/
|
|
public void close() throws IOException
|
|
{
|
|
impl.close();
|
|
}
|
|
}
|